DoubleEndedIterator and ExactSizeIterator for To*case. #38968

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@clarcharr
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clarcharr commented Jan 10, 2017 edited

Because the iterator itself is exact, I see no reason to not implement these traits. Sort of iffy in hindsight about DoubleEndedIterator but I've offered both to see what people think.

@brson brson was assigned by rust-highfive Jan 10, 2017
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@clarcharr clarcharr changed the title from DoubleEndedIterator and ExactSizeIterator for DoubleEndedIterator and ExactSizeIterator for To*case. to DoubleEndedIterator and ExactSizeIterator for To*case. Jan 10, 2017
@alexcrichton alexcrichton added the T-libs label Jan 19, 2017
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